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Do you often spend half an hour       your homework every day?
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The workers finished mending the road ____ this month.
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Where is Jim?--- He is sending an email ___ his friend.
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to
I’m sorry I didn’t recognize your voice just now. It sounded quite different ______ the phone.
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You can call me _______ 0512-5123467 or email me _______ Llily@126.com.   
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on, at
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at, on
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by, on
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on, on
— Look at that photo! What a happy family！— Yes, it’s a photo _______ my family.
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